JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
We are sorry for the inconveniences you are facing.
I was able to reproduce the issue in Google Chrome and Internet Explorer browsers. The issue seems to be caused by the Terms & Conditions widget on JS embed version of the form. A bug report ticket has been attached to this thread and escalated to our Development Team.
In the meantime, you can replace your form embed code with an iFrame version on the website. The iFrame version will not be affected by submission bug.
We will get back to you once we have any news on this.